Question

mahesh made a journey of 146km . he drives 2 hours in daylight and then for 1 hole1\2 in darkness at an average speed reduced by 10km/h from the daylight speed. find his speeds in daylight and in darkness respectively. ​

Answer 1

Step-by-step explanation:

distance distance covered in daylight=146km

time taken to cover the distance=2hrs

speed =distance÷time

speed =146÷2

=73km/h

distance cover in dark light=146-10

=136km

speed taken to cover the distance=1hole1/2=3/2hrs

speed =136÷3/2=90.6km/h

Answer 2

Answer:

speed-distance/time

let's speed--x and x-10

time--2hrs and 1/12hrs

distance at day--speed x time--2x

distance at darkness+(x-10) x3/2

2x+(x-10) x1. 5=146

3.5x=161

x=46km/sec

x-10=36km/sec